Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Athanasios Antoniadis, MD

Individual provider Obstetrics & Gynecology Physician · NPI 1730286485

Athanasios Antoniadis, MD practises Obstetrics/Gynecology in West Islip, New York. Graduated from University of Miami, Lm Miller School of Medicine in 1988, 38 years ago. Practices with North Shore-Lij Medical PC, a 6,350-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
38
Trained at
University of Miami, Lm Miller School of Medicine
Licensed in
NY
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

750 Montauk Hwy
West Islip, NY 11795-4411 Not confirmed with CMS for 12 years — call before visiting
Phone: (631) 376-1010
Fax: (631) 376-6156
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Obstetrics & Gynecology Physician (primary) Taxonomy 207V00000X · Licence 1831001 (NY)

Record details

NPI number1730286485
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 17, 2006
Last updated in NPPESApril 9, 2014

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyOBSTETRICS/GYNECOLOGY
Medical schoolUNIVERSITY OF MIAMI, LM MILLER SCHOOL OF MEDICINE
Graduated 1988 (38 years in practice)
Group practice North Shore-Lij Medical Pc — 6350 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients130
Services billed 474 a service is one billed item, such as a visit, a test or a procedure
Average patient age71

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at North Shore-Lij Medical PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 6350 clinicians in the practice; 12 are shown here.

Other providers in West Islip